| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyester film which is excellent in film formation stability by the inflation method and has excellent productivity in production of a porous film by drawing.SOLUTION: A film comprises a polylactic acid-based resin, a thermoplastic resin other than polylactic acid-based resins, a plasticizer, a heat-conductive filler and a non-heat-conductive filler, and the heat-conductive filler is preferably at least one selected from graphite, aluminum nitride, silicon nitride and silicon carbide. The film includes an A layer and a B layer: the A layer contains the heat-conductive filler, and the B layer is located in at least one surface layer and contains the non-heat-conductive filler. |
